Feel bad to say this but the lifelines were under the bow.River is open but there was alot of debris in the water. First prop was a 30 bravo but it wouldnt pull it with the boat loaded.So we tried blower bruces 28 labbed.Ran real scary after 100-110 ass end was all over the place. So we took it off and ran a 26 stock bravo until our new drive comes cant put much prop to it. It has a 1.24 gear going to a 1.30 on the B-Max so we should be back to the 30 pitch. Would like to try another 28 thats not worked should be perfect for the 1.24 drive.

Have you given ay thought to running semi-cleavers on your boat?

Julie

To be honest no. But once the new drive comes maybe. Kinda in the process of possibly building a different boat. What are you thinking. Just to be clear those speeds are not at WOT. We need to turn around 6500.

Julie the 28 pitch was trued and thinned with the diffuser ring (blowout ring) removed. Do you think the ring might be effecting the boat? Seems that every prop(hydromotive ie) acts real strange hitting the higher numbers. Boat starts to walk in the rear dont like the feeling at all. We have had boats over 120 before so we no when things dont seem right.

It is quite possible that it is your gear ratio producing a tip speed issue. Change the gears and then try to determine if the oddities subside....for many popular manufacturers this hae been the ticket! Let us know.

Julie

Hi Julie,
are you saying that tip speed affects handling? How about V bottoms? I talking about squirrley back ends? Too much prop rpm is the issue or not enough tip speed?

It is actually to much tip speed, which leads to increased drag leading to asymetrical lift differences. All of this can lead to un-settling behaviors from any hull.

Julie

Greg that hull ran 108 with a 4 blade bravo 30 pitch with two people. Its faster with weight. No matter what with us that boat plain and simple ran out of hull at 95mph. Have you ever noticed that as long as you are excellerating hard it drives fine. Then once you start to loose forward progress it chines. Or when trying to slow down? It is falling of the pad somewhat like an allision. Not to say I know it all Julie might have a fix.
Julie our 1.30 ratio should be here next week let you know what happens.

Sounds good B Boater....let me know.

Regards,
Julie

Hi Julie, an option for me might be a smaller diameter? Is the tip speed slower on a smaller diameter? -Or- more pitch and less rpm? I do have a 136 gear ratio which would solw the Prop shaft speed down.